Mechanical pencil



FIG. 1 is a perspective view of the top, front and right side of a mechanical pencil showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a right side elevational view, the opposite side being a mirror image thereof;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof.

The portions of the mechanical pencil depicted by means of broken lines in the figures have been shown for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a mechanical pencil, as shown and described. 